• Updated to NLog 4.5.11 and Newtonsoft.Json 11.0.2 to reduce dependencies for NetStandard2.0
• Setup github workflow for testing new PR and master builds
• Move test project file to new sdk file format
• Added sourcelink support for better debugging experience

• Introduced GetlfLayout with support for adding extra fields:

The following changes has also been made:

• Reduced allocations by writing message directly to JsonTextWriter (Skips allocation of internal GelfMessage-object and JObject-object).
• Reduced allocations by writing custom fields directly to JsonTextWriter (Skips allocations of JToken for primitive types).
• Added support for NLog ThreadSafe-attribute for improved concurrency in async-mode.
• Added option IncludeLegacyFields so one can skip deprecated fields (according to GELF 1.1 spec)
• Added fallback to Logger-name, when CallSite FilePath is null / empty.

Thanks @snakefoot for this contribution

Fixed timestamp type to be conform with Gelf specification
Fixed extra property rendering for non string types to Gelf message
Added NetCore support

• upgraded NLog and JSON libraries
• fixed log level ordinal values thanks to @neris
• fixed gelf converter to print full stacktrace including inner exceptions